On clear nights in January 2015, comet C/2014 Q2 (Lovejoy) is visible in the Taurus region of the sky to observers using binoculars. This chart indicates where to look for it on different dates during the month.

Comet C/2014 Q2 (Lovejoy) is one of more than 32 comets imaged by NASA's NEOWISE mission from December 2013 to December 2014. This image of comet Lovejoy combines a series of observations made in November 2013.

This graphic depicts the position of the Philae lander of the European Space Agency's Rosetta mission, and a nearby cliff photographed by the lander, in the context of topographic modeling of the surface of comet 67P/Churyumov-Gerasimenko's nucleus.

This graphic depicts the position of the Philae lander of the European Space Agency's Rosetta mission in the context of topographic modeling of the surface of comet 67P/Churyumov-Gerasimenko's nucleus.

From the location where it came to rest after bounces, the Philae lander of the European Space Agency's Rosetta mission captured this view of a cliff on the nucleus of comet 67P/Churyumov-Gerasimenko. The feature is called 'Perihelion Cliff'.

The Philae lander of the European Space Agency's Rosetta mission captured this view during its first bounce after hitting the surface of comet 67P/Churyumov-Gerasimenko on Nov. 12, 2014, with blurring as a result of the lander's own motion. The image from

This mosaic of images from the navigation camera on the ESA's Rosetta spacecraft shows the nucleus of comet 67P/Churyumov-Gerasimenko as it appeared at in the early morning, Universal Coordinated Time, of Dec. 17, 2014 (evening of Dec. 16, PST).

A 3D image shows what it would look like to fly over the surface of comet 67P/Churyumov-Gerasimenko. The image was generated by data collected by ESA's Philae spacecraft during the decent to the spacecraft's initial touchdown on the comet Nov. 12, 2014.

The Philae lander of Europe's Rosetta mission has returned the first panoramic image from the surface of a comet. The unprocessed panorama from the lander's CIVA-P camera shows a 360-degree view around the point of final touchdown.

This image was taken by the Philae lander of the European Space Agency's Rosetta mission when it was about 130 feet (40 meters) above the surface of comet 67P/Churyumov-Gerasimenko during descent to the surface on Nov. 12, 2014.

This frame from an animated sequence shows the Rosetta mission's Philae lander descending toward comet 67P/Churyumov-Gerasimenko (not in frame) on Nov. 12, 2014. The images are from the OSIRIS narrow-angle camera on the ESA's Rosetta orbiter.

The Philae lander of the European Space Agency's Rosetta mission is safely on the surface of Comet 67P/Churyumov-Gerasimenko, as these first two images from the lander's CIVA camera confirm. One of the lander's three feet can be seen in the foreground.

This image of comet 67P/Churyumov-Gerasimenko marks the first touchdown point of the Philae lander of the European Space Agency's Rosetta mission. The image was taken by on Sept. 14, 2104, nearly two months before Philae's Nov. 12 landing.

This image of comet 67P/Churyumov-Gerasimenko was taken by the Philae lander of the European Space Agency's Rosetta mission during Philae's descent toward the comet on Nov. 12, 2014 from a distance of approximate two miles (three kilometers).

The Onboard Scientific Imaging System (OSIRIS) on the European Space Agency's Rosetta spacecraft captured this parting shot of the mission's Philae lander after its separation from the mother ship on Nov. 12, 2014.

The Philae lander of the European Space Agency's Rosetta mission took this self-portrait of the spacecraft on Sept. 7, 2014, at a distance of about 10 miles (16 kilometers) from comet 67P/Churyumov-Gerasimenko.

The Philae lander of the European Space Agency's Rosetta mission took this parting shot of its mother ship, Rosetta, shortly after separation on Nov. 12, 2014. The image was taken with the lander's CIVA-P imaging system.

Some relatively rough terrain on the nucleus of comet 67P/Churyumov-Gerasimenko appears in this image taken by the navigation camera on the European Space Agency's Rosetta spacecraft in the second half of October 2014.

A patch of relatively smooth ground on the nucleus surface of comet 67P/Churyumov-Gerasimenko appears in this image taken by the navigation camera on the European Space Agency's Rosetta spacecraft in October 2014.

The Philae lander of the European Space Agency's Rosetta mission took this self-portrait of the spacecraft on Sept. 7, 2014, at a distance of about 30 miles (50 kilometers) from comet 67P/Churyumov-Gerasimenko.